Portable jig display stand



May 9, 1961 G. w. FALK ErAL PORTABLE JIG DISPLAY STAND Filed July 15, 1958 INVENTORS GEORGE W.FALK

BY MORRIS FALK, JR. awyfwb Hll/ /IIHHHIHIIIIH /IIHHIIIHIIIIII /awVAT-roRNEYs United States PoRTABLE no DISPLAY STAND Filed July 15, 1958, Ser. No. 748,716

'1 Claim. (Cl. 315-51) This invention relates to a jig and display stand and more particularly to a jig and display stand for demonstration of door locks of the type commonly known as cylindrical locks, more particularly, cylindrical door locks in which retractor mechanism operated by the knobs is assembled, with the latch bolt casing externally of the easing and independently of the same, as more particularly set forth in the patent to Gilbert, No. 2,803,958.

This invention further relates to a door lock display stand arranged clampingly to hold a cylindrical door lock in a manner to permit actuation of the lock while at the same time allowing visual inspection of the inner mechanism of the said lock, to acquaint the purchaser or installer with the assembly thereof. Still more particularly, this invention relates to a jig or display stand for cylindrical door locks which may be stabilized on a horizontal plane surface in a plurality of sidewise and inverted positions, thereby permitting Aobservation of the -actions of the lock from a variety of vantage points.

This invention relates further to a display stand whereby a door lock may be mounted with ready accessibility to the interior of the said lock, thereby permitting observation of the lock in operation, and accurate appraisal of the lock mechanism, facilitating testing and repair of the said lock mechanism.

This invention relates further to a jig or display stand adapted to form a part of a multiple unit display, as taught by a companion copending application led on even date in the name of lames Vallez, entitled Lock Display Device, Ser. No. 748,717, assigned to the assignee of the present application.

As is well known in the art, point of purchase displays of lock mechanisms, and particularly cylindrical lock mechanisms, have generally consisted of locks mounted within sections of wood as taken to represent doors. While adequately illustrating the outer appearance of the lock and providing a means of testing the action of the lock, such displays do not enable the purchaser to see or to have access to the inner mechanism of the lock in operation. While the ordinary purchaser may not lbe particularly interested in the inner mechanism of locks, large purchasers, such as architects, builders and viewers at hardware shows and the like often desire to see the inner mechanism of locks in order better to permit them to select the lock best suitable for the intended job, and to have intimate knowledge of the operation to assure proper assembly.

The use of transparent plastic mounting blocks has, in a measure, provided a means of viewing the inner mechanism of locks in operation, such blocks being mortised as the wooden blocks aforementioned. The use o-f transparent plastic has not, however, proved satisfactory by reason of the limited visibility within the block, due to refraction in the plastic itself, and also by reason of the limited angular vision through the transparent plastic and the fact that after reasonable handling, nicks and scratches on the surface of the plastic further impede viewing of the mechanisms. These expedients do not atent O r' tion While rotating the knobs, and particularly is thisv true in locks where Athere `are more complex features, such as push buttons and'key actions to test, in addition to testing merely the knob action, and to acquaint oneself with the manner of assembly.

Accordingly, it is an object of our invention to provide a portable jig display stand for locks and particularly for cylindrical locks which will permit full visibility ofthe inner operating mechanism, while at the same time leaving the hands of the examiner free for testing the various functions of the lock. A further object of our invention is to provide a jig display stand as aforesaid which may be Vset down on a horizontal plane surfac-e in a plurality of positions, thereby permitting the examiner to Watch the action of the lock mechanism from a series of angular viewpoints.

Still a further object of our invention is to provide a jig display stand as aforesaid in a form which may be generally described as a partial shell, having cut away side wall portions, thereby providing a maximum of open space through which the actions of the inner mechanism of the lock may be observed.

A further object of the invention is to provide a jig or display stand as aforesaid, having particular utility in observing the manner of assembly and to permit the testing and repair of cylindrical locks, especially those which have a multiplicity of components which are to be united for operation in assembling on the door.

To attain these objects `and such further objects as may appear herein or be hereinafter pointed out, We make reference to the accompanying drawings, forming a part hereof, in which- Figure l is a perspective view of a stand in accordance with the invention, illustrated in connection with a cylindrical lock set assembly;

Figure 2. is a front elevation partly in section of a stand in accordance with the invention;

Figure 3 is a side elevation of a stand in accordance with the invention;

Figure 4 is a section taken on the lines 4 4 of Figure 2.

In accordance with the invention, a partial shell 1t) is provided with opposed parallel side Walls 11 and 12, and opposed parallel front and rear walls 13 and 14, lying normal to the side walls 11 and 12. The side walls 11 and 12 are each provided with a transverse boring 1S normal to the said walls. A lateral edge boring 16 is formed through and normal to the wall 13, the axis of said boring 16 lying perpendicular to the axis of Ithe transverse boring 1S. The area adjacent the boring 16 is recessed or mortised as seen at 17, to provide an anchorage spot for the front plate F of a latch bolt assembly (see Figure l). The recessed area 17 may be provided with tapped drill holes 1S and 19, to cooperate with fastening means, such as .bolts 20 and 21, to secure the front plate F in position.

The front and rear walls 13 and 14, respectively, are provided with laterally extending portions 13a, 13b, 14a and 14h, for purposes which will hereafter appear. The side walls 11 and 12 slope inwardly from a high central ring or escutcheon seat portion S surrounding the boring 15, to a constricted or narrow portion adjacent the walls 13 and 14, thereby providing increased visibility of the interior of the lock mechanism.

3 In known manner, a lock assembly, through the medium of the usual escutcheons and draw bolts, may be clamped in the jig, the housing and inner mechanism lying inside the partial shell 10, with the spindles (not shown) which extend through the boring 15 terminating in the knobs K. Likewise, the latch bolt L projects through the lateral boring 16. When thus mounted, the lock assembly may be actuated by operation of the knobs K without interference from any part of the jig structure, and the inner mechanism of the lock assembly may be clearly observed. Observation of the working of the inner parts is facilitated by the fact that the portable display stand may be stabilized on a horizontal plane surface in at least three positions. It may be stabilized on the extended portions or feet 14b, 13b in the erect position shown; it may be stabilized on the extending feet 13a, 14a, in the inverted position; and likewise, may be stabilized on the plane surface by placing the rear wall 14 downwardly toward the horizontal plane. It will be recognized that the stand will be stable in each of the three positions aforesaid, and consequently, in each position the knobs may he operated with one hand, without upsetting the lock assembly. This arrangement is of particular utility in repairing locks, where the faults are not readily apparent, and in testing lock mechanisms where it is desired to observe the interaction of the parts in operation and the means employed to position the retractor wings in the aforesaid Gilbert patented lock to either side of the latch bolt casing properly to engage the latch bolt shank, and thereby quickly acquaint installers of the position of the related parts within the door mortised and cutout areas.

Having thus described our invention and illustrated its use, what we claim as new and desire to secure by Letters Patent is:

A portable jig and display stand for mounting a door lock in a manner providing optimum visual accessibility of the inner lock mechanism comprising a substantially open partial shell member including spaced parallel side a wall members and front and rear wall members normal to the planes of said side wall members, said shell member including a boring transversely through said side Wall members and normal thereto and said front wall member including a boring medially positioned relative lll to said side wall members having its axis normal to the plane of said front wall member and the axis of said transverse boring, and said side wall members being broad at the portions surrounding said transverse boring, and narrow at the portions adjacent said front and rear wall l5 members to provide clearances for manipulation and inspection within said shell member, and said walls delining substantially open top and bottom portions, an opposed pair of said wall members including extending portions forming opposed pairs of feet above and below 20 said wall members, each said opposed pair of feet and said rear wall member serving, respectively, in the erect, inverted and sidewise positions of said stand to stabiize said stand on a horizontal plane surface, with said side walls vertically disposed.

OTHER REFERENCES Independent Lock Co. Catalog #12, page 22. Copy- 35 right 1941. 

